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Finding the Fourth Proportional to 101,970.03, 140,765.67 and 61,153.59

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Solution

The fourth proportional to 101,970.03, 140,765.67 and 61,153.59 is: 84,420.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,970.03 : 140,765.67 = 61,153.59 : x
  2. Step 2: Convert to fraction form
    101,970.03/140,765.67 = 61,153.59/x
  3. Step 3: Cross multiply
    101,970.03x = 140,765.67 × 61,153.59
  4. Step 4: Simplify right side
    101,970.03x = 8,608,326,069.26
  5. Step 5: Solve for x
    x = 8,608,326,069.26/101,970.03
  6. Step 6: Final answer
    x = 84,420.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.